Dr. Starline is back to his evil antics! But to enact his latest scheme he'll have to get into an abandoned Dr. Eggman base and past an army of badniks! To do that, he'll need the help of some of Sonic's greatest enemies! Mimic, Rough, Tumble, and Zavok are back and badder than ever! Then, when Dr. Eggman unleashes his latest attack, Sonic and Tails will have to rely on their friends to help them foil his newest dastardly plan! There's a new kid on the block! And a new... tower? While Tangle tries to initiate the new recruit, Belle, into the Restoration, Sonic, Tails, and Amy investigate a mysterious structure that has popped up. Turns out, it's a maze of twisting corridors and crazy challenges! Collects the Bad Guys mini-series plus issues #33-40 from volumes 9 and 10 (Chao Races & Badnik Bases and Test Run!) of the Sonic the Hedgehog series.